406sbcz Posted April 14, 2015 Share Posted April 14, 2015 so i have a 406, 400 block bored .030 over, kb pistons, aluminum heads, mild cam, holly 750 double pumper. built TH350 transmission. it is now in my chevy 3/4 ton but recently was in a jag, and kept breaking the rear diff. now it needs a new vehicle to go into. would the 280z hold up? im not sure of the hp specs, but it is a torque monster. when i say monster, i mean it. it'll pull you back into the seat all the way to 6000 rpm's and send you flying when the next gear grabs, the front end would lift up. so would i need to add on any mods? swap rear ends? probably upgraded suspension..... the jag was a little different. couldnt do anything to the suspension and no upgradable rear diffs to that specific model (80s sovereign) and if there was, it'd be too expensive. id like to switch to maybe a 5 or 6 speed if it wouldnt be too difficult but the th350 would be ok too. im going to buy the dat200 kit. anyway, need some advice. havent bought the manual or the car yet. opinions opinions please Quote Link to comment Share on other sites More sharing options...
406sbcz Posted April 14, 2015 Author Share Posted April 14, 2015 by the way id like to keep it a street performance car that is driven on occasion. the engine currently uses premium gas only Quote Link to comment Share on other sites More sharing options...
RebekahsZ Posted April 15, 2015 Share Posted April 15, 2015 Keep the T350, run bias ply slicks, weld the rear diff and keep it on the track. If you weld the diff you will break axles on the street. If you leave the diff open, you will wear out the cross shaft in the burn out pit, then break an axle when it cocks and locks the diff. Of course a LSD will solve this dilemna and I know a guy who will sell one for $500+ shipping. Quote Link to comment Share on other sites More sharing options...
406sbcz Posted April 15, 2015 Author Share Posted April 15, 2015 what would a decent LSD come out of? i know a guy here that has several restored 280z and 300z cars, and a crap ton of parts.... Quote Link to comment Share on other sites More sharing options...
RebekahsZ Posted April 15, 2015 Share Posted April 15, 2015 87-89 300zx turbo. If you stay auto it may hold up. If you slam and jam a stick, you will break axles. Quote Link to comment Share on other sites More sharing options...
406sbcz Posted April 15, 2015 Author Share Posted April 15, 2015 gotcha thanks Quote Link to comment Share on other sites More sharing options...
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